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Saturated absorption frequency stabilization of VCSELs based on high-temperature operation.
Applied Optics
|March 17, 2026
Summary
High-temperature vertical-cavity surface-emitting lasers (VCSELs) offer stable pump light for quantum precision measurements. A new system achieves high frequency and wavelength stability, enabling device miniaturization.
Area of Science:
- Optics and Photonics
- Quantum Metrology
- Laser Physics
Background:
- Quantum precision measurement demands highly stable pump light sources with narrow linewidths.
- Vertical-cavity surface-emitting lasers (VCSELs) are suitable due to their inherent wavelength stability and high-temperature performance.
Purpose of the Study:
- To design a frequency-stabilized optical path for weak spatial optoelectronic signals.
- To optimize VCSEL operating temperature and extraction methods for frequency error signals under limited optical power.
Main Methods:
- Simulated VCSEL linewidth and alkali metal vapor cell motion using MATLAB.
- Analyzed beam quality to design a stabilized optical path.
- Compared seven error signal extraction schemes, selecting the sinusoidal phase-locked amplification method.
Main Results:
- Achieved a laser frequency stabilization system using a high-temperature VCSEL (780 nm, 1.3 mW).
- Demonstrated wavelength stability of 0.0002 nm and frequency stability of 78.56 MHz.
- Successfully extracted frequency error signals under limited spatial optical power, mitigating Doppler effects.
Conclusions:
- The developed system provides a practical solution for miniaturizing quantum precision measurement devices.
- High-temperature VCSELs are effective for stable laser frequency stabilization.
- The sinusoidal phase-locked amplification method ensures high-quality error signal extraction.
